FIX: Warning C4056 Generated When /Op Option is Used

• The C/C++ Compiler (CL.EXE), used with:
  • Microsoft Visual C++, 32-bit Editions, versions 2.0, 4.0, 4.1, 4.2, 5.0
  • Microsoft Visual C++, Macintosh Cross-Development Addon, version 2.0

SYMPTOMS

The following warning is generated when the sample code listed in the More Information section below is compiled with the option /Op and the warning level set to 3 or higher:

warning C4056 : overflow in floating-point constant arithmetic

RESOLUTION

Ignore the warning as it is generated incorrectly. Alternatively, you can suppress the warning by using the /W2 option.

STATUS

This bug was corrected in Microsoft Visual C++, version 6.0.

MORE INFORMATION

Sample Code to Reproduce Problem

/* Compile options needed:   /Op /W3
*/ 

void main()
{
   double i;
   i = -1.0;
} 

Additional query words: 9.00 10.00 10.10 10.20

Keywords : kbMAC kbVC400bug kbVC410bug kbVC420bug kbVC500bug kbVC600fix
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Issue type : kbbug